Alterable worksheet in which students are presented with four digits and are asked to form two-digit numbers that sum to be a multiple of a given number, or are asked to choose two factors of a given ...More: lessons, discussions, ratings, reviews,...

Tangle Tables offers 12 levels of difficulty. Younger learners will benefit from the settings where the challenge is to find the sum or product and complete the table. For older students teachers may ...More: lessons, discussions, ratings, reviews,...

Give students practice with multiplication, factoring, and prime and composite numbers through an exciting game -- a game that exposes students to one of the great unsolved problems of mathematics.More: lessons, discussions, ratings, reviews,...

Is the number in a row a factor of the number heading a column? If so, drag its co-factor into the given square; if not, drag the red X. Click a square to see the two numbers; click again to see a vis...More: lessons, discussions, ratings, reviews,...

This manipulative allows you to construct factor trees (to the prime factors) for two numbers, and then from the prime factorization, you are asked to identify the Least Common Multiple (LCM) and the ...More: lessons, discussions, ratings, reviews,...

The user learns about factors, multiples, prime and composite numbers, and how to find factors and multiples of given numbers. After veiwing examples, users can interactively practice factoring numbe...More: lessons, discussions, ratings, reviews,...

Factor POP! challenges users to utilize math skills and quick fingers. Buttons scroll across the screens at a chosen speed, and the user has to pop the buttons that are multiples or factors of the cho...More: lessons, discussions, ratings, reviews,...

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
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and do not necessarily reflect the views of the
National Science Foundation.